A research team led by Dr. Thomas Scheike and Dr. Hiroaki Sukegawa et al. has achieved a tunnel magnetoresistance (TMR) ratio of 631% at room temperature, breaking the previous world record which had stood for 15 years.
2023.05.12
A research team led by Dr. Thomas Scheike and Dr. Hiroaki Sukegawa et al. has achieved a tunnel magnetoresistance (TMR) ratio of 631% at room temperature, breaking the previous world record which had stood for 15 years. This was accomplished by fine-tuning the interfaces in a magnetic tunnel junction (MTJ). Using this breakthrough result, the team will work to accelerate the development of ultrasensitive magnetic sensors for medical use and very large capacity MRAM.
Figure.(Left) Layered structure of the MTJ device developed in this research. (Right) A room-temperature TMR ratio of 631%—a world record—was achieved using this device.
This research was published online in Applied Physics Letters (vol. 122, issue 11) on March 15, 2023.
631% room temperature tunnel magnetoresistance with large oscillation effect in CoFe/MgO/CoFe(001) junctions
Thomas Scheike, Zhenchao Wen, Hiroaki Sukegawa, and Seiji Mitani, Applied Physics Letters 122, 112404 (2023).
Thomas Scheike, Zhenchao Wen, Hiroaki Sukegawa, and Seiji Mitani, Applied Physics Letters 122, 112404 (2023).